8
6.2 Contrast setting
The contrast can be directly changed by simultaneously pressing the right button
and the -button (too bright) or the -button (too dark)�
MENU USER
MENU USER
Increase contrast
Decrease contrast
7 Operation
To operate an AS-i system a special AS-i power supply is required (e�g� AC1216)�
The AS-i power supply supplies the yellow AS-i cable with energy and implements
a data decoupling to the voltage regulator of the power supply� Standard switched-
mode power supplies would consider the AS-i data signals as interference signals
and suppress them�
Disconnect the power supply before connecting the controller
e
�
The AS-i system is operated ungrounded� AS-i + and AS-i - are to be
symmetrical to the ground potential of the installation�
Ensure a low-resistance connection of the symmetry point of the AS-i power
supply (terminal "shield") to the ground of the installation�
